
The first term inside the bracket on the right hand side of the above expression is similar to the one of [1]}. Therefore, (see [1]} and expression for \(g(z)\le -p+1)\)  there),
\(\left[ 1+c t \frac{\bar{u}(x)-\bar{u}(y)}{\bar{u}(x)} -\frac{\bar{u}(x)^{p-1}}{\bar{u}(y)^{p-1}} \right] \le 0.\) 
